1.9.0-pre1 is now 1.9.0-pre2
diff --git a/BUILD b/BUILD
index a96c72e..4e4e2ca 100644
--- a/BUILD
+++ b/BUILD
@@ -56,9 +56,9 @@
 # This should be updated along with build.yaml
 g_stands_for = "glossy"
 
-core_version = "5.0.0-pre1"
+core_version = "5.0.0-pre2"
 
-version = "1.9.0-pre1"
+version = "1.9.0-pre2"
 
 GPR_PUBLIC_HDRS = [
     "include/grpc/support/alloc.h",
diff --git a/build.yaml b/build.yaml
index 5c7dba6..eb408e4 100644
--- a/build.yaml
+++ b/build.yaml
@@ -12,9 +12,9 @@
   '#08': Use "-preN" suffixes to identify pre-release versions
   '#09': Per-language overrides are possible with (eg) ruby_version tag here
   '#10': See the expand_version.py for all the quirks here
-  core_version: 5.0.0-pre1
+  core_version: 5.0.0-pre2
   g_stands_for: glossy
-  version: 1.9.0-pre1
+  version: 1.9.0-pre2
 filegroups:
 - name: census
   public_headers: